Primary battery.



No. 628,739. Patented luly ll, I899. E. BAINES.

PRIMARY BATTERY- (Application filed Dec. 29, 1597.)

(No Model.)

rrrc.

EDWARD BAINES, OF NEW YORK, N. Y., ASSIGNOR TO WILLIAM C. CALLMANN AND CHARLES A. STERN, OF SAME PLACE.

PRIMARY BATTERY.

SPECIFICATION forming part of Letters Patent No. 628,739, dated July 11, 1899.

Application filed December 29, 1897. Serial No. 664,320i. (No model.)

To all whom it may concern D is the grid or perforated plate and con- Be it known that I, EDWARD BAINES, a substitutes the addition whichI make to the orject of the Queen of Great Britain, residing dinary gravity-battery, and it is by means of at New York, (Brooklyn,) in the county of this grid that I obtain the object of myinven- 5 Kings, in the State of New York, have intion, and upon the'upper side of this grid I vented certain new and useful Improvements place the crystals of copper sulfate which are in Primary Electric Generating-Batteries, of used to keep the battery in action. which the following is a specification. All of the parts of my battery are set up Myinvention relates to that class of primary and arranged as shown in my drawing and as 10 batteries known as the gravity-battery. set forth in this specification.

The object of myinvention is to produce a The grid D, I prefer making of such mateprimary electric generating-battery in which rial as cannot be plated with copper, such as the negative electrode shall be in a clear soporcelain or pottery; but this grid may be lution of copper sulfate and out of contact made of metal, and it may form part of the 15 with the crystals of copper sulfate used to negative electrode without in any way intermaintain the strength of current in the batfering with my invention. tery and to make use of electric current pass- I do not make any claim to a battery in ing from the positive electrode tothe negative i which the negative electrode consists of a electrode to decompose the crystals of copper plate of copper or other electronegative ma- 2o sulfate. terial set in a horizontal position in the bat- To obtain the object of my invention, I add tery or to a battery in which the crystals of to the ordinary gravity-battery now in use a copper sulfate are contained in a porous or perforated plate or grid, and this plate I 1operforated receptacle. cate between the electrodes in the battery,aud What I claim as my invention isz 5 upon this grid 1 place the crystals of copper In a primary electric generating-battery of sulfate used in the battery, and I completely the gravity type a negative electrode 13 of cover the upper side of the perforated plate electronegative material located in the lower or grid with crystals of copper sulfate, so that part of a jar A and in a solutionof copper current can pass from the positive electrode sulfate and having a positive electrode of zinc 30 to the negative electrode by Way of the inter- 0 located in the upper part of the jar A and stices between the crystals of copper sulfate ina solution of zinc sulfate, a grid D of nononly-that is, I completely cover the upper metallic material located between the elecside of the grid D with crystals of copper sultrodes B and C; and crystals of copper sulfate to the depth of oneinch or thereabout. fate located on the upper side of the grid D,

35 In the anexed drawing, which forms part and occupying the whole of the sectional area of this specification, A is a jar or containing of the jar A. vessel.

13 is the negative electrode of copper and EDWARD BAINES. in the form of a deep star or spiral and in a 0 solution of copper sulfate. Witnesses:

O is the positive electrodeof zinc and in a M. E. KANE, solution of zinc sulfate. MARGARET OLEARY. 

